kimiboard.overlay

#include <zephyr/dt-bindings/input/input-event-codes.h>
#include <dt-bindings/zmk/matrix_transform.h>
#include <physical_layouts.dtsi>

/ {
    chosen {
        zmk,physical-layout = &physical_layout0;
    };

    physical_layout0: physical_layout_0 {
        compatible = "zmk,physical-layout";
        display-name = "Default Layout";
        kscan = <&kscan0>;
        transform = <&default_transform>;

    keys = 
            //                     w    h    x     y   rot rx  ry
             <&key_physical_attrs  50   100    0   0   0   0   0>   // SW4 (reset button)
            , <&key_physical_attrs 100  100  120   0   0   0   0>   // SW3 (left button)
            , <&key_physical_attrs 100  100  240   0   0   0   0>   // SW2 (center button)
            , <&key_physical_attrs 100  100  360   0   0   0   0>   // SW1 (right button)
            ;
    };

    default_transform: keymap_transform0 {
        compatible = "zmk,matrix-transform";
        rows = <4>;
        columns = <5>;
        map = <
        RC(3,3) RC(2,2) RC(1,1) RC(0,0)    // SW4 to SW1 (SW4 is the reset switch)
        >;
    };

    kscan0: kscan0 {
        compatible = "zmk,kscan-gpio-matrix";
        diode-direction = "col2row";
        col-gpios
            = <&xiao_d 10 GPIO_ACTIVE_HIGH>
            , <&xiao_d 9 GPIO_ACTIVE_HIGH>
            , <&xiao_d 8 GPIO_ACTIVE_HIGH>
            , <&xiao_d 7 GPIO_ACTIVE_HIGH>
            , <&gpio0 10 GPIO_ACTIVE_HIGH>
        ;
        row-gpios
            = <&xiao_d 1 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
            , <&xiao_d 2 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
            , <&xiao_d 3 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
            , <&xiao_d 6 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>
        ;
    };
};

/ {
    trackball_listener: trackball_listener {
        status = "okay";
        compatible = "zmk,input-listener";
        device = <&trackball>;
    };
};

&pinctrl {
    spi0_default: spi0_default {
        group1 {
            psels = <NRF_PSEL(SPIM_SCK, 0, 5)>,
                    <NRF_PSEL(SPIM_MOSI, 0, 4)>,
                    <NRF_PSEL(SPIM_MISO, 0, 4)>;
        };
    };

    spi0_sleep: spi0_sleep {
        group1 {
            psels = <NRF_PSEL(SPIM_SCK, 0, 5)>,
                    <NRF_PSEL(SPIM_MOSI, 0, 4)>,
                    <NRF_PSEL(SPIM_MISO, 0, 4)>;
            low-power-enable;
        };
    };
};

&xiao_serial { status = "disabled"; };

&spi0 {
    status = "okay";
    compatible = "nordic,nrf-spim";
    pinctrl-0 = <&spi0_default>;
    pinctrl-1 = <&spi0_sleep>;
    pinctrl-names = "default", "sleep";
    cs-gpios = <&gpio0 9 GPIO_ACTIVE_LOW>;

    trackball: trackball@0 {
        status = "okay";
        compatible = "pixart,pmw3610";
        reg = <0>;
        spi-max-frequency = <2000000>;

        motion-gpios = <&gpio0 2 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;

        zephyr,axis-x = <INPUT_REL_Y>;
        zephyr,axis-y = <INPUT_REL_X>;

        res-cpi = <400>;
        smart-mode;

        invert-x;
    };
};